| Benford Chart for BIIB 10K Filed 2/6/2026 | ||||||||||||||||||||||||||||||||||||
Total numbers found: 2,071 Recent share count: 146,702,272 (1's column) ■ = Typical range across full coverage universe | ||||||||||||||||||||||||||||||||||||
| # of Numbers Found in Filing | |||
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| Benford Chart for BIIB 10K Filed 2/6/2026 | ||||||||||||||||||||||||||||||||||||
Total numbers found: 2,071 Recent share count: 146,702,272 (1's column) ■ = Typical range across full coverage universe | ||||||||||||||||||||||||||||||||||||
| # of Numbers Found in Filing | |||
|
| Benford's Law Stocks Score for BIIB = 99 | ||
Starting from a possible score of 100, we made the following score deductions: • The 7's percentage was higher than the 6's percentage, increasing the penalty multiplier. • We deducted point upon observing the 9's percentage was below the company's typical historical range. |
| BIIB's Score Vs. Typical Stock | |||
|
| 1's | 2's | 3's |
|---|---|---|
| We found 688 numbers that start with the digit 1. Here they are: 18,378,285,308 146,758,528 1,860.6 1,749.9 1,689.6 177.7 1,778.6 1,980.3 16.6 1,556.5 1,906.0 1,296.8 135.3 1,292.9 1,632.2 1,161.5 1,292.9 1,632.2 1,161.1 11.21 11.18 146.5 145.6 144.7 147.1 145.9 145.6 1,292.9 1,632.2 1,161.1 15.7 110.5 14.0 1.5 17.5 11.2 1,247.1 1,649.7 1,172.3 1,247.1 1,649.7 1,172.7 1,342.4 1,404.8 1,123.3 1,748.6 114.8 190.5 11,182.7 11,333.3 1 1 182.0 136.2 19,259.8 18,256.8 16,716.0 1,292.9 1,632.2 1,161.5 101.9 124.4 158.1 19.3 101.4 159.6 148.2 102.7 130.9 171.1 178.7 1,547.2 153.8 153.7 1,258.3 1,074.8 144.7 119.6 11.3 1,371.1 10.0 1,733.1 1,750.0 12.3 149.3 1,392.8 101.9 1,049.9 1,049.9 169.5 1 136.2 19,259.8 16,716.0 1,292.9 1,292.9 170.5 1 182.0 18,256.8 168.7 1 153.7 17,627.6 14,799.4 1,632.2 1,632.2 17.5 17.5 169.5 1 136.2 19,259.8 16,716.0 167.9 1 164.9 16,466.5 13,397.9 13,388.4 1,161.1 1,161.1 1,161.5 11.2 11.2 11.2 12.3 12.3 168.7 1 153.7 17,627.6 14,799.4 14,799.4 100.0 1.15 1.15 13.9 1,137.3 1,622.4 1.15 150.0 130.0 1.4 1.2 1.1 1.2 1,361.4 1,622.4 1.6 14.5 172.50 196.4 197.0 1.0 172.50 15.9 1,259.0 100.0 121.2 110.3 159.9 151.8 1.0 1.3 100.0 14.3 151.8 121.2 1.0 1.3 13.7 103.0 14.4 1.0 1,400 1.4 1.4 13.8 13.8 10.1 10.1 11.7 11.7 1.2 1.2 153.4 188.0 153.4 14.3 14.3 11.9 11.9 18.2 1 15.8 168.5 169.2 1,012.5 1,426.5 1,595.1 1,588.8 104.9 145.2 111.4 149.1 126.2 168.5 1,105.7 1,665.4 1,715.0 1,876.9 1.4 1.4 1,666.4 1,546.8 1,573.2 1,130.7 1,741.2 11.5 1 1,188.0 1,040.4 1,988.1 1,130.8 1,803.0 190.2 190.2 13.0 19.4 13.6 1.1 1.1 13.7 195.1 195.1 1.6 1.6 1.7 10.3 10.2 195.5 1.7 197.2 11.8 15.8 13.4 15.2 11.7 162.7 1,091.6 1,905.8 1.7 153.3 115.7 1,046.1 1,210.8 173.3 1,062.0 14.2 16.5 1,989.7 171.9 162.7 1,091.6 153.8 1,035.0 19.0 19.2 19.6 1,944.8 142.8 173.3 1,062.0 154.1 1,000.4 1,210.8 1,091.6 1,414.9 1,339.5 1,266.2 18.4 14.0 1,860.6 1,749.9 1,689.6 18.8 18.1 17.2 177.7 1,595.2 1,882.8 145.4 1.3 101.9 124.4 14,067.3 14,138.4 1,635.0 1,635.0 1,642.9 1,642.9 100.0 100.0 100.0 100.0 15,866.3 15,945.3 1.6 100.0 1.5 118.1 118.1 10.0 10.0 118.1 1,664.9 1,664.9 179.7 179.7 1,949.9 179.7 1,770.2 11.7 11.7 11.7 150.0 150.0 1,741.0 1,741.0 1,378.7 1,295.6 1,029.5 1,008.0 1.75 1,664.9 15.4 120.1 1,664.9 1,238.9 1,239.1 109.6 118.1 109.6 118.1 179.7 179.7 12.4 12.4 1,239.1 1,238.9 1.4 18.4 186.6 1,531.0 1,062.6 133.8 1,531.0 1,235.0 18.1 11.6 12.9 1,193.7 1 11.4 1,963.7 143.5 137.8 1,093.5 1,070.5 163.1 100.7 110.1 128.1 1 14.8 122.6 125.3 140.3 148.3 110.7 115.8 116.4 16.9 146.0 1.5 151.8 121.2 1,748.6 1,748.6 1,495.7 1,494.7 1,101.5 1,101.1 1,475.6 1,475.0 1.75 100 101 13.9 1.5 1.0 150.0 100.0 101.0 1.5 1.5 100.0 101.0 1.12 100.0 101.0 10.7 1.75 1.5 1,500.0 1.75 1.0 1,000.0 170.5 146.8 1,000.0 169.5 145.8 1,000.0 168.7 144.9 16.6 171.2 136.2 156.4 110.5 113.9 182.0 126.1 153.7 14.0 14.0 17.5 16.6 171.2 136.2 15.7 15.1 1.1 163.2 164.9 1.5 11.1 13.4 13.3 1 15.7 1.5 11.2 126.1 153.7 17.0 18.1 11.6 12.9 1.7 1 1,292.9 1,632.2 1,161.1 146.5 145.6 144.7 1 147.1 145.9 145.6 115.7 154.1 187.8 198.6 12.4 10.3 10.2 132.6 13.9 196.4 197.0 10.5 12.4 10.3 10.2 1.5 139.10 11.2 161.28 176.41 146.46 196.13 13.2 11.7 141.71 188.28 172.75 141.6 193.6 175,000 199,000 1,225.2 192.4 1,052.6 1,104.4 1,556.5 1,906.0 1,296.8 10.1 15.1 155.4 154.5 17.3 12.7 13.7 158.1 135.3 1,082.8 1,357.2 141.7 1,013.7 1,456.1 1,529.6 1,054.8 172.8 1,013.7 1,278.7 1.3 1.8 1 1.4 11.9 17.2 1.1 190.2 12.2 1.5 1.3 11.5 18.5 1.2 18.9 1.2 16.9 1.1 11.9 16.9 1.8 1.1 1.6 1 1.5 14.4 10.4 146.2 142.8 172.1 186.3 173.4 1.2 12.4 12.7 11.8 11.3 180.0 186.3 173.4 127.6 139.3 147.6 12.6 13.8 125.0 19.7 100.4 139.5 139.5 19.7 100.4 1.5 18.2 102.4 101.4 1,000.4 190.2 166.4 156.7 13.5 1,414.9 1,339.5 1,266.2 18.4 14.0 1,860.6 1,749.9 1,689.6 11.0 15.0 1.0 11.5 125.0 155.0 11.0 15.0 10.0 16.0 155.0 16.0 126.5 164.8 186.0 152.2 16.7 138.0 176.7 1.3 17.1 173.0 118.5 187.0 1.1 165.0 11.8 1.0 1.3 15.5 14.4 13.6 13.4 130.0 16.0 135.0 100.0 13,450,000 124.3 18.0 11.0 15.0 11.0 15.0 15.0 16.0 150.0 150.0 166.8 152.8 140.6 1.75 1.00 1.75 16.8 17.5 17.6 1.2 1.1 1,871.6 1,775.4 1.8 1,860.6 10.8 1,236.7 12.2 12.2 1,673.6 1,749.9 1,366.1 13.3 10.6 1,618.5 1,689.6 11.7 1,443.0 17.5 12.9 1,587.2 1,604.2 1,787.2 183.2 16.6 1,509.5 1,287.8 1,129.4 1,292.9 1,632.2 1,161.1 | We found 368 numbers that start with the digit 2. Here they are: 2,404.2 2,310.4 2,533.4 2,445.4 2,433.6 2,403.7 2,549.7 240.6 290.2 254.4 218.8 27.7 218.8 263.6 273.8 2 2,375.0 2.2 2,168.1 2,460.5 265.4 292.5 29,439.5 28,049.3 2,802.6 2,807.7 290.4 20,552.7 23.8 23.8 2,977.1 2,977.1 29,439.5 28,049.3 29.2 240.8 230.0 290.8 291.2 264.2 27.7 277.1 222.3 28.1 273.8 24.6 201.6 299.0 248.0 2,204.6 2,875.5 277.0 23.0 206.1 280.0 2.2 2,404.5 2,375.0 2,375.0 23.8 2,977.1 20,552.7 23.8 2,977.1 23.8 2,977.1 2 23.8 2,977.1 23.8 2,977.1 2 274.4 274.4 274.4 23.8 2,977.1 279.3 205.8 230.0 265.0 261.0 265.0 261.0 2.8 267.3 2,300.0 2.5 2.3 2.3 28.4 2.3 24.6 28.0 23.3 23.3 24.2 24.2 24.2 25.5 212.5 21.1 20.4 21.6 263.1 212.6 256.2 274.3 250.1 260.5 294.7 2,372.5 2,190.5 2,159.3 2,436.0 2,225.9 209.9 20.9 2,154.2 213.1 213.1 222.1 222.1 23.0 29.2 2.5 24.1 29.2 2.1 2.8 2.4 28.0 25.9 27.0 25.4 27.2 2,773.1 2.2 2,635.8 2,687.5 23.6 2,661.2 20.7 23.5 2,720.1 2.1 2,519.8 28.0 210.4 25.5 293.4 2,313.5 2,554.4 2,168.1 2,460.5 2,313.5 2,554.4 240.8 230.0 23.9 29.2 240.6 240.6 20.2 256.5 2,233.2 2,233.2 2.2 2.2 246.4 246.4 246.4 291.2 291.2 221.6 221.6 246.4 27.7 246.4 246.4 291.2 221.6 2.250 2,027.7 2,233.2 246.8 246.8 290.6 2 290.8 2 227.7 227.7 23.0 226.7 2.4 21.3 2.2 2.7 216.7 202.4 2,140.3 2,167.4 2,109.8 2,931.2 2,670.8 272.8 286.7 254.2 21.7 265.4 290.4 2.4 2.0 23.5 26.1 23.1 2.250 250.0 250.0 2.250 24.4 280.5 2.1 2 2 2 25.0 2.6 21.7 2.3 26.8 25.0 2.6 21.3 2 296.7 291.1 234.1 279.0 249.3 236.4 220.0 2.5 291.1 292.6 200.0 20.7 200.0 222,000 227.39 280.60 251.69 283.93 280.60 28.6 2,051,000 246.22 2,385,000 243.92 24,500 235.82 282.92 232.1 2.5 295,000 25.1 294.3 263.6 273.8 234.0 286.1 294.0 246.9 219.2 2,305.1 2,933.0 214.9 2,520.2 2,799.3 2,003.3 230.3 273.1 21.0 20.4 22.1 22.8 21.0 2.0 263.6 21.0 21.0 2.2 2.1 2.1 264.1 245.4 252.2 276.5 267.5 250.3 246.9 291.2 26.3 28.6 24.7 275.2 2.0 270.0 27.7 23.0 248.5 280.0 291.2 2,802.6 2,807.7 24.0 25.5 212.3 216.1 240.2 270.0 20.0 253.1 27.0 2.7 26.5 2.3 20.2 28.0 219.2 227.4 223.5 200.0 200.0 250.0 230.0 21.5 295.0 23.6 200.0 246.5 2.0 25.0 2.0 234.0 285.3 224.7 2,053.8 2,171.5 257.2 2,139.2 2,127.4 214.0 2,248.0 2.0 2.1 2.2 201.5 212.5 257.7 286.6 232.0 209.7 250.5 2,433.6 2,403.7 2,549.7 | We found 246 numbers that start with the digit 3. Here they are: 33.6 30.2 305.6 343.6 315.5 37.1 3,008.5 3.0 3,055.4 3,181.3 356.4 324.2 3,349.4 334.5 31.5 33.6 361.6 305.8 31.6 34.4 31.3 301.9 35.1 3,419.3 3,008.5 3 34.0 34.0 303.1 303.1 302.5 36.3 36.3 301.5 301.5 3.2 3.2 3.2 3.2 302.5 35.0 35.0 309.3 393.4 38.3 300.0 3.1 327,400 320.0 34.6 35.0 3.4 3.4 30.4 30.4 3.4 30.4 30.4 327,400 30.2 31.9 3.2 357.8 310.6 301.1 382.5 30.1 32.4 32.4 36.6 31.7 3,547.9 3,571.5 3,237.3 3,976.2 3,141.4 31.9 3,637.4 30.0 31.6 3,535.3 38.7 3,474.7 38.4 31.6 392.0 317.8 353.8 31.5 386.5 35.0 35.0 3,688.0 3,534.9 35.0 305.3 30.0 33.6 300.0 3.150 3.250 3,696.2 38.6 3 34.8 34.8 3.7 33.5 3.8 3 308.4 3,055.4 3,181.3 3.4 3.2 356.4 334.5 370.8 34.5 31.2 37.3 370.8 30.7 327,400 398.0 3.150 3.250 350.0 3.25 3.150 37.1 37.1 3.6 3.7 3 3 3 3 371.7 303.5 352.7 342.4 393.4 35.5 3.5 3.7 3.7 387.0 303.5 352.7 342.4 3.7 301.85 301.85 301.85 310.61 383.61 34.5 35.1 383.61 363,000 3,076,000 34.0 31.2 331.3 377.6 346.1 361.6 305.8 300.0 36.1 34.4 318.4 37.9 326.9 31.3 3 356.6 3.6 31.5 3.9 3.1 355.1 3.9 30.9 3.3 305.6 343.6 315.5 307.2 375.8 375.8 309.0 302.4 3.0 30.0 30.0 37.5 35.0 30.0 35.0 350.0 35.0 37.5 35.0 392.0 375.0 31.0 31.0 329.6 371.9 304.4 350.8 323.5 39.9 38.7 30.3 34.2 31.9 39.0 30.0 335.0 39.4 35.0 30.0 35.0 30.0 30.0 360.0 3.0 30.0 3.8 39.3 3.9 3.8 3.6 3,547.9 307.4 3,320.8 3,237.3 366.9 395.0 3,537.7 3,141.4 3,729.7 361.0 |
| 4's | 5's | 6's |
|---|---|---|
| We found 187 numbers that start with the digit 4. Here they are: 471.8 446.7 48.6 4 40.1 45.1 45.8 4 464.0 431.9 432.0 424.2 4,547.2 494.8 4.6 406.8 42.9 4.7 4,101.0 44.3 45.8 45.8 44.0 44.0 4 45.1 45.1 45.1 42.5 43.7 485.1 43.7 485.1 450.0 4 4.9 4.5 450.0 4,200.0 40.0 469.2 4.7 4.2 40.0 4.2 469.2 49.9 437.5 48.7 48.7 48.7 49.7 48.6 482.9 451.3 405.3 442.8 4,038.9 4,349.8 4,661.9 453.2 453.2 479.1 479.1 438.8 438.8 4 4.0 4,105.3 48.1 49.0 48.1 4 420.2 409.4 424.9 48.5 446.7 40.0 485.0 485.0 4.5 4.7 4 4 42.8 42.8 485.1 4.050 413.0 461.8 448.9 4.050 489.0 489.0 419.5 419.3 49.7 4 4.1 420.9 4 4.0 4.0 4.1 445.5 4.6 4.5 40 4.050 480.3 476.4 4,547.2 400.0 47.5 4.050 4.050 4.050 45.9 45.9 45.8 45.1 4.2 4.2 45.1 40.1 4 45.9 4.2 42.5 42.3 48.4 4.9 477,000 44.7 4.2 4.1 4.1 40,000 45.1 448.9 47.3 48.4 431.9 441.1 40.6 400.0 457.2 470.3 498.8 4 4.5 48.4 485.0 4.0 450.0 450.0 48.5 40.7 4 420.2 409.4 45.0 400.0 4.7 44.1 49.9 437.5 45.0 4.4 42.7 4.1 49.8 49.9 485.1 45.0 45.8 45.6 419.1 427.8 414.7 482.2 4 460.5 4 412.8 471.8 | We found 160 numbers that start with the digit 5. Here they are: 59.9 515.0 52.9 57.3 524.6 560.5 548.3 5,528.8 507.6 569.4 52.9 5,140.7 50.0 56.7 5.0 531.6 569.4 569.4 50.0 50.0 56.4 56.4 56.4 590.5 590.5 54.6 51.0 57.4 59.1 511.2 538.6 512.1 576.3 536.7 587.8 562.7 520.5 55.9 55.9 56.8 5.8 5.9 52.6 52.6 572.9 50.0 59.9 592.1 53.5 51.1 515.0 507.1 525.0 575.0 537.6 537.6 52.7 52.7 52.2 52.2 56.7 56.7 58.9 5.0 524.5 512.8 5.3 5.4 5.4 512.8 512.8 512.8 5.050 5.750 5.200 5,678.1 5,678.1 5,437.2 560.4 560.4 52.7 52.7 50.6 50.3 58.4 54.0 59.5 5,986.6 5,852.1 5 56.4 580,000 5.0 52.9 5.050 5.750 5.200 5.050 5.750 500.0 500.0 500.0 5.4 5.200 5,067.3 5.25 5.0 51.6 57.3 57.3 58.9 51.6 5.5 5 57.0 525.6 56.4 56.4 550,000 5.1 50.5 587.4 56.8 5 5.7 5.9 5.2 5.1 50.4 5.2 50.0 50.0 50.0 500.0 50.0 500.0 50.0 50.0 50.0 59.2 53.1 50.0 50.0 50.0 52.4 55.2 54.0 50.0 50.0 560.0 5.0 580,000 5.3 524.9 52.6 51.5 55.9 5.1 5.9 534.7 | We found 129 numbers that start with the digit 6. Here they are: 652.6 61.5 6,491.1 6,478.9 6,286.8 673.2 60.2 68.3 61.3 60.6 64.7 6,926.1 650.0 6.0 683.5 67.7 6 6 6 67.7 67.7 6 66.8 650.0 650.0 6.2 67.0 640.0 62.5 6.6 6,602.9 6,724.2 6.8 6.8 6.3 6.3 61.5 679.7 651.2 628.0 64.2 606.8 695.5 662.9 625.5 625.7 610.5 672.2 63.2 63.2 618.6 670.9 6 635.4 679.4 60.5 652.6 6,687.8 6,254.1 64.0 64.0 64.0 64.0 6,687.8 6,254.1 645.0 6,478.9 6,219.2 6,491.1 6,478.9 648.8 648.8 62.5 62.5 6.2 6.3 6.2 684.5 6.450 668.7 668.7 68.5 62.1 645.5 6.450 690.2 6,286.8 650.0 6.450 6,567.3 6,286.8 6 6 668.4 658.2 63.4 6.8 6 668.4 658.2 6.3 67.5 6.1 6 6 6 606.4 60.2 6.6 67.6 693.6 625.0 647.0 60.7 65.0 60.0 60.8 640.0 625.0 650.0 67.5 61.5 6.0 6 652.6 649.4 673.6 692.9 61.5 |
| 7's | 8's | 9's |
|---|---|---|
| We found 132 numbers that start with the digit 7. Here they are: 7,119.4 7,213.5 7,246.7 732.9 7,769.9 7.97 76.6 7.2 752.5 7,456.8 750.6 748.5 732.3 779.9 7.9 78.5 73.9 7,380.8 788.1 799.2 7 73.3 71.9 71.4 75.0 74.5 7.0 7.9 7,193.4 7,193.4 7.5 7 7 7 75.4 73.8 797.9 749.4 746.8 707.8 775.2 707.5 700.4 795.0 71.7 71.7 77.4 77.4 7 7 715.4 729.1 769.0 793.1 740.8 770.0 72.2 72.2 7.5 7.8 75.0 7.5 7.8 7,119.4 7,213.5 7,246.7 7 728.3 735.6 737.5 732.9 7,379.5 7,884.3 7.9 7.7 70.0 737.6 70.0 7,380.8 73.3 73.3 73.3 72.4 738.7 717.3 74.7 700.0 700.7 7.2 7.2 76.6 72.4 7 733.9 7.4 7 7 7 7.6 7.3 7 721.0 740.7 7.5 704.0 748.5 732.3 7.5 7.5 7.5 701.6 79.9 77.5 75.0 700.0 71.0 70.0 7.6 70.0 7 72.9 7.5 7,119.4 732.9 7,213.5 75.7 7,246.7 70.7 706.2 746.2 766.1 747.8 | We found 90 numbers that start with the digit 8. Here they are: 899.3 88.6 8,334.1 8,538.8 8.83 8.02 8.79 807.2 8,974.1 863.1 85.0 88.6 88.6 809.9 863.1 89.5 89.5 89.5 8 8 8 85.0 8.8 812.5 88.6 8.7 89.4 819.7 887.3 813.6 811.0 879.0 81.4 86.9 82.5 880.8 832.4 83.4 80.5 801.9 857.1 824.2 8.0 828.0 880.8 857.7 857.1 848.2 899.3 88.4 88.4 807.2 807.2 8 80.4 86.4 8.0 80.8 8.4 81,000 81,000 81,000 81,000 805,000 853.4 886.5 832.2 891.3 832.2 8.5 8 88.0 8.4 864.0 864.0 844.0 80.0 88.3 86.5 812.5 8 8 853.0 83.4 8.5 868.0 899.3 8.3 817.0 855.3 | We found 71 numbers that start with the digit 9. Here they are: 9,890.6 9,675.9 9,835.6 9,178.5 9,691.2 958.1 997.2 9.5 920.0 920.0 983.9 983.9 909.3 967.1 95.6 945.6 968.0 965.0 920.0 997.9 90.5 90.5 921.3 947.5 966.2 947.7 9.9 908.3 937.5 93.9 9,178.5 9,691.2 95.0 973.0 943.7 9.7 9.9 9 9.6 94.1 97.5 99.981 99.924 99.657 99.298 99.973 99.174 99.294 99.764 91.7 9.4 9 9.7 9.5 997,000 98.0 989.6 9.5 9.6 9 9.1 94.6 937.5 900.0 90.2 95.5 93.5 955.6 9,890.6 9,675.9 9,835.6 |
| 10K Filed 2/6/2026 | ||||||||||||||||||||||||||||||||||||
XBRL? ✓ [ original filing ] Total numbers found: 2,071 ■ = Typical BIIB range from 4/22/2021 to 2/6/2026 | ||||||||||||||||||||||||||||||||||||
| 10Q Filed 5/1/2025 | ||||||||||||||||||||||||||||||||||||
XBRL? ✓ [ original filing ] Total numbers found: 992 ■ = Typical BIIB range from 4/22/2021 to 2/6/2026 | ||||||||||||||||||||||||||||||||||||
| 10Q Filed 8/1/2024 | ||||||||||||||||||||||||||||||||||||
XBRL? ✓ [ original filing ] Total numbers found: 1,475 ■ = Typical BIIB range from 4/22/2021 to 2/6/2026 | ||||||||||||||||||||||||||||||||||||
| 10Q Filed 11/8/2023 | ||||||||||||||||||||||||||||||||||||
XBRL? ✓ [ original filing ] Total numbers found: 1,551 ■ = Typical BIIB range from 4/22/2021 to 2/6/2026 | ||||||||||||||||||||||||||||||||||||
| 10K Filed 2/15/2023 | ||||||||||||||||||||||||||||||||||||
XBRL? ✓ [ original filing ] Total numbers found: 2,120 ■ = Typical BIIB range from 4/22/2021 to 2/6/2026 | ||||||||||||||||||||||||||||||||||||
| 10Q Filed 5/3/2022 | ||||||||||||||||||||||||||||||||||||
XBRL? ✓ [ original filing ] Total numbers found: 1,030 ■ = Typical BIIB range from 4/22/2021 to 2/6/2026 | ||||||||||||||||||||||||||||||||||||
| 10Q Filed 7/22/2021 | ||||||||||||||||||||||||||||||||||||
XBRL? ✓ [ original filing ] Total numbers found: 1,526 ■ = Typical BIIB range from 4/22/2021 to 2/6/2026 | ||||||||||||||||||||||||||||||||||||
| 10Q Filed 10/30/2025 | ||||||||||||||||||||||||||||||||||||
XBRL? ✓ [ original filing ] Total numbers found: 1,591 ■ = Typical BIIB range from 4/22/2021 to 2/6/2026 | ||||||||||||||||||||||||||||||||||||
| 10K Filed 2/12/2025 | ||||||||||||||||||||||||||||||||||||
XBRL? ✓ [ original filing ] Total numbers found: 2,091 ■ = Typical BIIB range from 4/22/2021 to 2/6/2026 | ||||||||||||||||||||||||||||||||||||
| 10Q Filed 4/24/2024 | ||||||||||||||||||||||||||||||||||||
XBRL? ✓ [ original filing ] Total numbers found: 973 ■ = Typical BIIB range from 4/22/2021 to 2/6/2026 | ||||||||||||||||||||||||||||||||||||
| 10Q Filed 7/25/2023 | ||||||||||||||||||||||||||||||||||||
XBRL? ✓ [ original filing ] Total numbers found: 1,488 ■ = Typical BIIB range from 4/22/2021 to 2/6/2026 | ||||||||||||||||||||||||||||||||||||
| 10Q Filed 10/25/2022 | ||||||||||||||||||||||||||||||||||||
XBRL? ✓ [ original filing ] Total numbers found: 1,562 ■ = Typical BIIB range from 4/22/2021 to 2/6/2026 | ||||||||||||||||||||||||||||||||||||
| 10K Filed 2/3/2022 | ||||||||||||||||||||||||||||||||||||
XBRL? ✓ [ original filing ] Total numbers found: 2,092 ■ = Typical BIIB range from 4/22/2021 to 2/6/2026 | ||||||||||||||||||||||||||||||||||||
| 10Q Filed 4/22/2021 | ||||||||||||||||||||||||||||||||||||
XBRL? ✓ [ original filing ] Total numbers found: 1,036 ■ = Typical BIIB range from 4/22/2021 to 2/6/2026 | ||||||||||||||||||||||||||||||||||||
| 10Q Filed 7/31/2025 | ||||||||||||||||||||||||||||||||||||
XBRL? ✓ [ original filing ] Total numbers found: 1,551 ■ = Typical BIIB range from 4/22/2021 to 2/6/2026 | ||||||||||||||||||||||||||||||||||||
| 10Q Filed 10/30/2024 | ||||||||||||||||||||||||||||||||||||
XBRL? ✓ [ original filing ] Total numbers found: 1,587 ■ = Typical BIIB range from 4/22/2021 to 2/6/2026 | ||||||||||||||||||||||||||||||||||||
| 10K Filed 2/13/2024 | ||||||||||||||||||||||||||||||||||||
XBRL? ✓ [ original filing ] Total numbers found: 2,131 ■ = Typical BIIB range from 4/22/2021 to 2/6/2026 | ||||||||||||||||||||||||||||||||||||
| 10Q Filed 4/25/2023 | ||||||||||||||||||||||||||||||||||||
XBRL? ✓ [ original filing ] Total numbers found: 986 ■ = Typical BIIB range from 4/22/2021 to 2/6/2026 | ||||||||||||||||||||||||||||||||||||
| 10Q Filed 7/20/2022 | ||||||||||||||||||||||||||||||||||||
XBRL? ✓ [ original filing ] Total numbers found: 1,579 ■ = Typical BIIB range from 4/22/2021 to 2/6/2026 | ||||||||||||||||||||||||||||||||||||
| 10Q Filed 10/20/2021 | ||||||||||||||||||||||||||||||||||||
XBRL? ✓ [ original filing ] Total numbers found: 1,513 ■ = Typical BIIB range from 4/22/2021 to 2/6/2026 | ||||||||||||||||||||||||||||||||||||